BGS mineralogy and petrology collection record

Sample number E10774; COLLNO175;
Sample Donor Blake,Professor
Rock name 'Original entry: Hornblende Gneiss'
Stratigraphy Not entered
Comments Mona Complex. The Gneisses. See Mem.Geol.of Anglesey.pp.376-7 Albitic.
Locality details By Holland Arms
50k map sheet Caernarfon (105)

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Map reference SH 471 724
Year collected Not entered 
Bore name Not applicable
Confidentiality No restrictions

Petrological thin sections

Links to high resolution images

Transition from XPL to PPL light


E10774

Cross Polarized, E10774

Plane Polarized, E10774

Plane Polarized, E10774